Spool having thread fastening means



Oct. 28, 1952 J .LQHNSQN 2,615,651

SPOOL HAVING THREAD FASTENING MEANS Filed Dec. 2, 1948 INVENTOR. JAMES ELWOOD JOHNSON A T TORNE) Patented Oct. 28, 1952 SPOOL HAVING THREAD FASTENING MEANS James Elwood Johnson, Cleveland, Ohio, assignor to Industrial Rayon Corporation, Cleveland,

Ohio, a corporation of Delaware I Application December 2, 1948, Serial No. 63,167

2 Claims. 1

This invention relates to spools, bobbins, etc. upon which filamentary strandular material such as thread or the like is wound to form a package. More particularly the invention relates to a means on a spool that is adapted to hold an end of the strandular material at the start of a winding or collecting operation, and to release such end upon a total unwinding.

Winding and unwinding of strandular material occurs in certain textile operations, e. g., in plying, twisting, creeling, etc. A preliminary step in winding strandular material is that of fastening an end to the core of a spool in a manner so as to keep the end from slipping, and also to make it readily releasable when unwound. Generally, when strandular material such as thread or the like is first wound on the core of a spool the initial end is fastened in one of several commonly practiced ways, e. g., by hand winding several turns to prevent slippage, using an adhesive tape to secure the thread end, or the thread may be held to the core by a rubber band. Still another method may be the winding of a preliminary tail. The tail is usually wound on the outside of one of the flanges of a spool on a section that is especially adapted to hold a small amount of yarn. Packages having tails take considerable time, and, sometimes, the tail portion is not readily releasable because it is, generally, not wound by means of a traverse.

This invention advantageously provides for a thread end fastening or holding means that is positioned in or on the surface of the core of a collecting spool such as a spool or bobbin. The holding means comprises a device that is adapted to securely hold an initial end of a thread during a collecting or winding operation; also, upon a subsequent unwinding the holding device is adapted to readily release the thread end. The device, desirably, is made of a resilient material conforming, generally, to the shape of the periphery of the core of the spool to which it is fastened. It is positioned on the spool in the terial is adapted to frictionally hold the thread loop ends against the. periphery of the core. When the spool is unwound the threadis first pulled from under the frictionally holding section thus unmaking the loop, and then the thread is pulled 01f the loop holding section.

The thread-or the like holding device will be described in greater detailin the following specification in connection with the attached drawing where:

Figure 1 represents the use of a slight package employing the thread end holding device of this invention in a twisting operation;

Figure 2 represents the position of the thread holding deviceon a spool or the like;

Figures 3 and d'represent, in plan, two modifications of the thread end 'holding'device; and

Figure 5 represents the holding device in partial section, positioned on the core of a spool or the like.

Referring to the drawing Figure 1 thereof represents a section of a twisting apparatus. Strandular or filamentary material H such as thread or the like is adapted to be withdrawn from a supply spool In that is positioned about a rotating spindle [2. The thread, after being twisted, is collected on a take-up spool l3. Both the supply and the take-up spools are rotated at related, predetermined speeds imparting to the thread a predetermined twist. Prior to the twisting operation, however, the thread is fastened to the core of the take-sup spool l3 by a holding means such as the bifurcated device l5. v

Thebifurcated device I5 advantageously is made of-a resilient material, such as from thin spring steel, or the like. It comprises a main body [8 and two extending bifurcated members l6, l1 thatare adapted to follow the curvature of the periphery of a spool core with the axial sides of the members I6, I! being transverse to the axis of the core. The axial outer side of member l6 has a portion which forms an acute angle be-,

tween a plane through the axis of the core and the main body portion [8 of the bifurcated device [5. The extensions Hi, I! are separated to permit an easy. interlacing therebetween of the thread H. Further, the extending members l6, H are tapered andupturned at their ends so as to permit a ready insertion thereunder of the thread, as well as an easy withdrawal.

The holding device 15 is easily laced. The initial end of the thread I I is first madeinto a loop which is placed about the [extending member 16, then the two portions of the thread behind the loop are placed'under the second member I1.

The thread is thus firmly held in the form of a loop that is frictionally secured to the core of the spool l3. Thus secured to the core of the spool l3 the winding operation can be then proceeded with. When the supply of thread H is entirely withdrawn from the supply spool In the portion of the thread starting the loop that is frictionally held by the member I! against the spool I core is readily pulled out, the loop is unmade, and the thread end is pulled from about the member Hi.

In the modification represented by Figure 3 there is shown an indentation 20 in the side of the member [6, and that the second member I! is larger than the first. The indentation 20 is adapted to prevent the slipping off of the thread loop, and the enlarged extending section H provides for greater friction with which to hold the loop ends.

The indentation can be replaced by a differently designed extending member I6, i. e., the member 16 can be angularly positioned, as shown in Figure 4, to oppose the slippage of the thread loop. Also, where the holding operation does not require so much friction as represented by the second extending member I! that portion could be desirably reduced in size. Also, the device [5 may be further modified by providing extending members on the other side of the main body I8. Thus constructed the device I5 would be adaptable on spools that are rotated clockwise or counterclockwise.

Further, the thread holding device may be secured to the core of any collecting spool by any suitable securing means such as, for instance, exploding rivets. In certain instances, where undue eccentricity of the spool may be caused, during rotation, by the added weight of the holding device IE, it may be desirable to compensate for such additional weight by embedding the holding device in the core. In most instances, however, the holding device weight will not affect the rotation of the spools.

The holding device 15 may be adapted to various types of yarn or thread collecting devices; flangeles or otherwise. Also, the holding device can be used on spools adapted to the winding of metallic, and other strandular materials as well as tapes, ribbons, etc.

I claim:

1. In combination, a core upon which thread or the like is adapted to be wound, a bifurcated means positioned on said core in frictional engagement therewith and extending over a portion of its surface, said means having a main body portion and at least two members extending in frictional contact about the periphery of thecore the axial sides of said members being transverse to the axis of said core, the axial outer side of-one of. said bifurcated members having a.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 751,214 Steeb Feb. 2, 1904 1,926,539 Hurst Sept. 12, 1933 2,406,435 Payne Aug. 2'7, 1946 FOREIGN PATENTS Number Country Date 5,765 Great Britain of 1893 

